Shovel bucket



Feb. l0, 1942. H, Q DlNEs 2,272,337

sHovEL BUCKET Filed July 1o, 1940 2 sheets-Sheet;

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Patented Feb. 10, 1942 UNITED STATES yPATENT OFFICE SHOVEL BUCKET Harry G. Dines, Yakima, Wash. Application July 10, 1940, serial No. 344,823

1 Claim.

This invention relates to improvements in power shovels, the general object of the invention being to provide a bucket having a solid bottom, with means for tilting the bucket on the dipper stick to empty the same.

Another object of the invention is to provide an upright adjacent a hopper on which the stick rests as the bucket or dipper is being dumped to cause the material to drop into the hopper.

The invention also consists in certain other features of construction, combination and arrangement of the several parts, to be hereinafter fully described, illustrated in the accompanying drawings and specifically pointed out in the appended claim.

In describing the invention in detail reference will be had to the accompanying drawings wherein like characters denote like or corresponding parts throughout the several views and in which:

Fig. 1 is a fragmentary side view showing a part of a boom and stick of a power shovel with the bucket or dipper arranged in accordance with this invention.

Fig. 2 is a similar View but with the stick resting on the upright and the bucket starting on its dumping movement.

Fig. 3 is a similar View but showing the parts in fully dumping position.

Fig. 4 is a sectional view through the bucket.

Fig. 5 is a perspective View of the bucket supporting end of the stick.

In these drawings the numeral I indicates a part of the boom of a power shovel and the numeral 2 a part of the dipper stick which has the rack teeth 3 thereon for engagement by a toothed wheel for retracting and projecting the stick for the digging and dumping operations.

A bucket 4 having a closed bottom is pivoted to the stick by means of the projections 5 on the lower part of the rear wall of the bucket being connected by a pin 6 to the stick. The vstick is formed with an upright part 1, braced as at 8, and having a projection9 at its upper end. This projection 9 will engage the upper part of the rear wall of the bucket, when the same is in filling position to hold the bucket parallel with the upright. A pivoted latch member I0 is carried by the upper end of the upright part 1 and has its upper looped end adapted to engage the keeper I I on the rear wall of the bucket when the bucket is in lling position. A spring I2 holds the latch member in operative position and the latch member is moved to releasing position by a cable I3 suitably guided along the stick and leading to the cab of the shovel.

A pulley I4 is pivoted to a projection I5 on the top of the bucket and a cable I6 passes over the pulley and passes over the usual pulley I'I on the boom and then to the drum of the apparatus.

A hopper I8 is provided for receiving the material from the bucket and a tower I9 is located at one side of the hopper and forms a rest for the stick when the bucket is to be dumped.

Thus with this invention the bucket is filled in the usual manner by causing it to engage the material by manipulation of the boom and stick. Then the boom is swungv to a position to place the stick on the tower after which the cable I3 is pulled to release the latch member I9 and then the cable IS is slacked to permit the bucket to drop into dumping position, as shown in Fig. 3, subsequent to which the cable I6 is pulled to swing the bucket upwardly into position where it will be engaged by the latch member and then the parts of the apparatus are moved to again ll the bucket.

While the present disclosure sets forth a particular type of excavating machine and bucket, it is to be understood use of this invention may be extended to other types of similar machines, dredges, etc., and successfully operated with buckets or shovels of special construction for engaging the material to be operated on.

It is thought from the foregoing description that the advantages and novel features of the invention will be readily apparent.

It is to be understood that changes may be made in the construction, combination and arrangement of the several parts, provided such changes fall within the scope of the appended claim.

What I claim and desire to protect by Letters Patent is:

In a shovel of the kind described, an upwardly inclined boom having a pulley at its upper end, a stick slidably mounted on said boom to project forwardly therefrom, an upright fixed on the forward end of the stick, a bucket having a closed bottom, lugs extending rearwardly from the bottom of said bucket and straddling the forward end of the stick, a pivot pin passing through said lug and stick, a stop extending forwardly from the upper end of the upright for engagement by the upper part of the rear wall cf the bucket, a cable connected to the upper part of said rear Wall and extending over the pulley to hold the bucket against the stop, a yoke straddling the upper end of the upright and pivoted thereto, said yoke extending upwardly and then forwardly to form a hook engaging portion, a bevelled hook extending rearwardly from the top of said rear wall and normally engaged by said yoke, and means to trip the yoke and release the bucket.

HARRY G. DINES, 

